Air cooling and water freezing evaporator for mechanical refrigerating apparatus



NOV. 24, 1931. w M L 1,833,846

, AIR COOLING AND WATER FREEZING EVAPORATOR FOR MECHANICAL REFRIGERATING APPARATUS Original Filed Feb. 28, 1921 2 Sheets-Sheet 1' NOV. 24, 1931. w, MELLQWES 1,833,846 AIR COOLING AND WATER FREEZING EVAPORATOR FOR MECHANICAL REFRIGERATING APPARATUS 7 Original Filed Feb. 28, 1921 2 Sheets-Sheet. 2

Patented Nov. 24, 1931 ALFRED W.

mm, or mnwauxnn, Wisconsin,

nnwnr B. H. rowan, an... or arrnwaum wrsooirsm ve :eraronaror. roe monmm rim-mounarms are or omi-mr TUE Application filed February re, rear; serial Hot tee tit. Renewed Jun'e 20, 1937 to the evaporator and a compressor driven by an electric motor to withdraw vaporized re frigerant from the eve orator and deliver it to the condenser to be liquefied therein.

The invention has as its object to provide an evaporator which will create a freezing temperature in the freezing compartment and a cooling temperature above freezing temper ture in the cooling compartment.

Another object is to provide an evaporator which will maintain a wide difierence between the freezing temperature in the freezing compartment and the cooling temperature in the cooling compartment.

Another obj ect isto provide an evaporator which will freeze Water and cool air at a rapid rate under wide variations in temperature that the conditions in service tend to create in the cooling compartment. I

Another object is to provide an evaporator which is simple and compact and which will occupy a small space-in the cooling compartment. I

Another object is to provide an evaporator which will shorten the time the compressor is in operation and lessen the electrical power consumed by the electric motor.

' Another object is to provide an evaporator which will increase the efliciency of the me chanical refrigerating apparatus in which it is employed' Another object is to provide an evaporator which will lessen the size and capacity of the compressor required for a given capacity in the evaporator; I

Another object is to which willnot require a-compor with excess capacity to compress supe-rhea-tefi re frigerant. l i I areas follows:

According to the invention as it is ordinarily embodied in practice, the evaporator is provided with multiple refrigerant tubes arranged to provide multiple freezing tubes upon both lateral sides of afreezing spaceor compartment to create a freezing temperature therein and multiple exposed cooling tubesina cooling space or compartment to cool ambient air therein to a eooling temper- 'ature above freezing temperature by direct a contact therewith. I

The evaporator which is illustrated in the accompanying drawings exemplifies and embodies the invention, and the views therein Fig. 1 is a front view of the evaporator with g parts thereof in section.

-Fig. is .a side view of the same evapora-. tor.

Fig. 3 is a front view of a modified evapo- 1o rater.

Fig. 4- is a side view of the modified evaporator, with the brine tank shown in section on the line H of Figure 3.

Figures 1 and 2 75 The refrigerator in which the ova o- I rator is employed is provided with a cooling or refrigerating compartment in which the evaporator is arranged to cool the an thereso in to a cooling temperature above freezing temperature. I

The cooling or refrigerating compartment may be divided into BII'BVQIPOIMIOI compartment and a food compartment by'a partitlon 85 2 which. is provided with an inlet passage 3 to admit at the top of the evaporatorcompertinent warm air from the food compartmentand an outlet passage' to discharge at the bottom of the evaporator compart- 9 ment cooled air into the food compartment.

The evaporator is formed in general by multiple refrigerant tubes 5 which are arranged in two opposite groups and connected at the lower end in multi le to a refrigerant 95 supply header or manifol 6 and at the upper provide an Lvapo rator i g header or manifold 7.

end in multiple to a refrigerant discharge The multiple refrigerant tubes form at the lower part thereof multiplefireezing, tubes w 8 arranged u' on both lateral sides of a freezing space an at the upper partthereof multiple cooling tubes 9 exposed to direct contact with the ambient air-in a cooling space within the cooling or refrigerating compartment. I

The freezing'space-has' arranged therein a freezing compartment 10 which may have two chambers, each of which is open at its front end to receive endwise a removable ice tray or drawer 11.

The freezing compartment and freezing tubes may be enclosed within a tank 12 which contains brine or other suitable liquid to increase the thermal conductivity between the freezing tubesand the freezing compart ment. 1

The tank is attachedtothe freezing tubes and carries thefreezing compartment, .but

the freezing compartment may be support-.

ed in various other ways.

The air cooling tubes may the freezing compartment toincrease the heat space.

The evaporator is supplied with liquid refrigerant from a condenser through a pipe be reflexed above .absorbing surface thereof within a given i 13 connected to the refrigerant supply mam fold, and vaporized refrigerant is returned therefrom to a compressor through a pipe 14;

connected to the re fold.

The cooling tern rature which the evaporator creates in this cooling or refrigeratrigerant discharge manior other instrumentality to start the motor upon the cooling temperature increaslng about forty-two degrees Fahrenheit (42 F.)

and to stop the motor upon the coolingltemperature decreasin to about thirty-eig t degrees Fahrenheit 38 F.)

'ing compartment may be regulated by a thermostat 15 which controls a pressure switch When the evaporator is in service, the re frigerant tubes are filled with liquid refrigerant to such a level that liquid refrigerant is always available in the cooling tubes to absorb suflicient heat from the cooling oom-' partment to create a cooling temperature therein.

The freezin tubes will create a freezing temperature, a out twenty degrees Fahrenheit (20f F.) in the freezing compartment and the cooling tubes will create a cooling temperature, about forty degrees Fahrenheit (40 F.) in the cooling compartment,

even though the temperature outside the refrig'erator varies through a wide range and thereby varies the heat required to be absorbed from the cooling compartment.

As the freezing compartment has multiple freezing tubes upon both lateral sides thereof to absorb heat therefrom from end' to end, the water therein is frozen ata rapid rate. v

As the cooling tubes exposed to direct contact with the ascended warm air in proximity thereto, the cooling compartment is cooled at a rapid rate to a cooling tempera ture.

Accordingly, the motor is in operation a shorter time and less electrical power isconsumed. T I

As the evaporator returnsto the compressor saturated and not superheated vaporized refrigerant, the compressor and the mo tor may have a smaller size and capacity for a given capacity in the evaporator..

As the cooling tubes cool the ascended warm air in proximity thereto and cooled air descends therefrom, the freezing tubes and the freezing compartment are shielded from the warm air by the cooling tubes and enveloped in descending cooled air.

The evaporator has arranged upon the 85 front thereof a removable front plate 16 fastened thereto by screws 17, and the front plate has an entrance intoeach chamber in the freezing compartment.

The ice tray has arranged upon the front thereof a cover plate 181 from which extends a handle 19 and the cover plate and the ice tray are spaced from each other to provide a passage therebetween.

When the ice tray is in its chamber in the freezing compartment, the entrance therefor through the front plate is closed by the cover plate.

. Figures 3 and 4 evaporator that has already been described merely in that the cooling tubes have a different conformation and an oil separator forms the refrigerant discharge header or manifold.

The invention which cafes with the reservoir below the refrigerant tubes.

The trough is connected to a refrigerant supply tube by an overflow pipe 22 which communicates with the refrigerant tube below therefrigerantdischarge pipe .14.

The modified evaporator differs from the is embodied in the oil separator is the subject of a. separate ap-' The liquid refrigerant delivered to the refrigerant tubes has commingled therewith oil from the compressor- When the liquid refrigerant in the refrigerant tubes is being vaporized, its ebullition causes liquid refrigerant and oil to pass'into the separator reservoir and accumulate in the trough. i

' When the oil rises accumulates uponi5 said compartment connected to said refrigerant supply manifold in multiple and having the liquid refrigerant in the trou h,'it overflows into the, refri erant disc arge pipe which conducts it bac to the compressor.

The liquid refrigerant in the trough is kept. from overflowing into the refrigerant (118- I charge pipe by the overflow pipe 22 'whic returns it to the refrigerant tubes:

The invention exemplified by the evaporators described herein may be embodied in various different forms which Will-be within the purview of the hereinafter claims.

' The invention claimed is:

1. An air cooling and water freezing mechanical refrigerating evaporator, comprising refrigerant containing means arranged opposite to each other in a horizontal relation and exposed to direct contact with the ambient air at the upper part thereof, a water freezing compartment arranged be tween said means below said upper art thereof, and means to deliver vaporiza le refrigerant to the aforesaid means in multiple.

2.'A n air cooling and water freezing me chanical refrigerating evaporator, comprising refrigerant containing means surrounding a water freezing compartment and exposed to direct contact with the ambient air outside said water freezing compartment, and means to deliver vaporizabl'e refrigerant to opposite sides of the aforesaid means in multiple;

3. An air cooling and water freezing mechanical refrigerating evaporator, comprising a refrigerant supply manifold, a

,water freezing compartment, and independ- -ent refrigerant tubes arranged on each side of said compartment connected to said refrigerantsupply manifold in multiple and exposed to direct contact with the ambient air outside said compartment.

4. An air cooling and water freezing mechanical refrigerating evaporator, comprising a refrigerant supply manifold, a water freezing compartment, and independent refrigerant tubes arranged on each side of the upper parts thereof exposed to direct contact with the ambient air.

5. An air cooling and water freezing mechanical refrigerating evaporator, comprising a refrigerant supply manifold, a water freezing compartment, and independent refiexed refrigerant tubes embracing said compartment connected to said refrigerant supply manifold in multiple and exposed to direct contact with the ambient air outside said compartment.

6. An air cooling and water freezing mechanical refrigerating evaporator, comprising a refrigerant supply manifold, a water freezing compartment, and independent reflexed refrigerant tubes embracing said compartment connected to said refrigerant su ply manifold in multiple and having the up- 7. An air cooling and water freezing mechanical refrigeratingevaporator arranged within a refrlgerating com artment, comprising a refrigerant supp y, manifold, a

water freezing compartment, and independent reflexed refrigerant tubes embracing said compartment connected to said refrigerant supply manifold in multiple and exposed to direct contact with the ambient air outside said freezing compartment to cause cooled air to envelop said freezing compartment.

8. An air cooling and water freezing mechanical refrigerating evaporator arranged within a refrigerating compartment and embracing a water freezing compartment, comprising a refrigerant container having independent refrigerant ducts arranged upon op- .posite sides of said freezing compartment and exposed to direct contact with the ambient alr gutside said freezing compartment, and means connected to said container to deliver refrigerant to said ducts in multiple.

9. An air cooling and water freezing mechanical refrigerating evaporator, comprising a refrigerant container arranged within a refrigerating compartment and embracing a water freezing compartment, an inner wall upon said container in direct contact throughout a substantial area with the refrigerant to absorb heat outward from said freezing compartment on both lateral sides thereof, an outer wall upon said container exposed to direct contact throughout a substantial area with the refrigerant and the ambient air above said freezing com art ment, and means connected to said refrigerant container to deliver refrigerant to opposite sides thereof in multiple: I

10. An air cooling and Water freezing evaporator, comprising a liquid refrigerant container providing in part a freezing container arranged upon each of opposite lateral sides of a -freezing compartment to absorb heat from end to end thereof at a rapid rate to create a freezing temperature therein and in part a cooling container ex osed to direct contact with the air in a cooling compartment to absorb heat therefrom at a rapid rate to create a cooling temperature "therein and cause cooled air to envelope said freezing containers and said freezing compartment, and means connecting the refrigerant containers on opposite sides of s aid freezing compartment in multiple to a refrigerant supply inlet and a refrigerant discharge outlet.

11. The combination with a refrigerating compartment of an evaporator arranged therein and comprising a tubular header for receiving refrigerant, independent parallel tubes connected to opposite sides of said beyond said zone into the path of the circu ating air in said compartment to cool the same and create a blanket of cooled air around said low temperature zone.

12. An air cooling and water freezing evaporator, comprising freezing means arranged upon both lateral sides of a freezing space to create a freezing temperature therein, cooling means having independent multiple exposed tubes arranged outward from the aforesaid freezing means in a cooling space to cool circulating air therein to a cooling temperature above freezing temperature by direct contact therewith, and means connecting both the aforesaid means to a refrig- Herant supply inlet and a vapor refrigerant outlet.

-13. An air cooling and water freezing evaporator, comprising freezing means arranged upon both lateral sides of a freezing space to create a freezing tem rature there- .in, cooling means having in ependent multiple exposed tubes arranged outward from Y the aforesaid freezing means in a cooling space to cool circulating air, therein to a cooling temperature above freezing temperature by direct contact therewith, a freezing compartment arrangedrwithin said freezing spaceto receive a removable ice tray, a cooling 'com artment enclosing said cooling space, an 'means'connecting both the afore- "ing temperature above freezing temperature by direct contact therewith, afreezing compartment arranged within said freezing space to receive a removable ice tray, a heat conductor having higher thermal conductivity than air to transfer heat from said freezing compartment to said freezin means, and means connecting-both the a oresaid means to a refrigerant supply inlet and a vapor refrigerant outlet. 7

15. An a1r cooling and -water freezing evaporator, com rising freezing means arranged upon bot lateral sides of a freezing space to create a freezing tem rature therein, cooling means having in ependent multiple exposed tubes arranged outward from the aforesaid" freezing means in a cooling space to cool circulating air therein to a cooling temperature above freezing tempera tureby direct contact therewith and to shield said freezing space and said freezing means from warm circulating -air by causing cooled air to'envelop said freezing space and said freezing'means, and means connecting both the aforesaid means to a refrigerant supply inlet and a vapor refrigerant outlet.

16. An air cooling and water freezing evaporator, comprlsing freezing means .ar-

ranged upon both lateral sides of a freezing 1n, cooling means having in ependent multiple exposed tubes arranged outward from the aforesaid freezing means in a cooling space to cool circulating air therein to a cooling temperature above freezing temperatureby direct contact therewith and to shield said freezing space and said freezing means from warm circulating air by causin cooled air to envelop said freezing space an said freezin means, a freezing compartment arrange within said freezing space to receive a removable ice tray, a cooling compartment enclosing said coolingspace, and means connecting both the aforesaid means to a refrigoutlet.

'erant supply inlet and a vapor refrigerant- 17. An air cooling and water freezing evaporator, comprising freezing means arranged upon both lateral sides of a freezing space to create a freezing tem erature therein, cool ing means having in ependent multiple exposed tubes arranged outward from' the aforesaid freezing means in a cooling space V to cool circulating air therein to a cooling temperature above freezing temperature by direct contact therewith and to shield said freezing space and said-freezing means from warm circulating air by causing cooled air to envelopsaid freezing space and said freezing means, a freezing compartment arranged within said freezing space to receive a removable ice tray, a heat conductor having higher thermal conductivity than air to transfer heat from said freezing compartment to said freezin means, and means connecting-both the a oresaid means to a refrigerant supply inlet and a vapor refrigerant outlet. 1

18. An air cooling and water freezin evaporator, comprising independent mult ple tubes arranged to provide multiple freezing tubes upon oth lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes in a, cooling space to cool circulating air therein tea cooling temperature above freezing.

temperature by direct contact therewith, and means connecting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet.

19. An air cooling and water freezing evaporator, comprising independent multiple tubes arranged to provide multi 1e freezmg tubes uponboth lateral sides 0 a freezing. space to createafreezing temperature therein and multiple exposed cooling tubes arrangedou'tward'from said freezing tubes in a cooling space to cool circulating air spaceto create a freezing tem erature thereneeasse therein to a-cooling temperature above freezing temperature by direct contact therewith,

a freezing compartment arranged within said freezing space to receive a removable ice tray, a coollng compartment enclosing said cooling space, and means connecting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet.

20. An air cooling and water freezing evaporator, comprising independent multiple tubes arranged to provide multiple freez inb tubes upon both lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes ;*1 a cooling space to cool' circulatin air i ierein to a cooling temperature above reezi.1g temperature by direct contact therewith, a freezing compartment arranged within said freezing space to receive a removable ice tray, a heat conductor having higher thermal conductivity than air to transfer heat from said freezing compartment to said freezing tubes, and means connecting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet.

21. An air cooling and water freezing evaporator, comprislng independent multiple tubes arranged to provide multiple freezing tubes upon both lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes in a cooling space to' cool circulati air therein to-a cooling temperature above reezing temperature '1) direct contact therewith and to shield sai freezing space and said freezing tubes from warm circulating air by causing cooled air to envelop said reezing space and freezing tubes, and means connecting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet.

22. An air coolin and water freezing evaporator, comprising independent multiple tubes arranged to provide multiple freezing tubes upon both lateral sides of a freezing space to create a freezing temperature there-in and multiple exposed cooling tubes arranged outward from said freezing tubes in a cooling'space to cool circulating air therein to a cooling temperature abovev freezing temperature by direct contact therewith and to shield said freezing space and said freezing tubes from warm circulating air by causing cooled air to envelop said freezing space and freezing tubes, a freezing compart ment arranged within said freezing space to receive a removable ice tray, a cooling compartment enclosing said cooling space, and means connecting said, multiple tubes to a refrigerant supply'inlet and a vapor refrigerant outlet. 23. An air cooling and water freezing evaporator, comprising independent multi le tubes arranged to provide multiple freezing I tubes upon both lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes in a cooling space to cool circulatin air. therein to a cooling temperature above reezing temperature by direct contact therewith and to shield said freezing space and said freezingutubes from warm circulating air by causing cooled air to envelop said freezing space and freezing tubes, a freezing compartment arranged within said freezing space "to receive a removable ice tray, a heat conductor having higher thermal conductivity than air to transfer heat from said freezing compartment to said freezing tubes, and means connecting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet. 24. An air cooling and water freezing evaporator, comprising reflexed multiple tubes arranged to provide multiple freezing tubes upon both lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes in a cooling space to cool circulatin air therein to a cooling temperature above reezing temperature by direct contact therewith and to shield said freezing space and said freezing tubes from warm circulatinigfair by causing cooled air to envelop said eezing space and freezing tubes, and means con-' necting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet. 25. An air cooling and water freezing evaporator, comprising reflexed multiple tubes arranged to provide multiple freezing tubes upon both lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes in a cooling space to cool circulating air therein to a cooling temperature above freezing temperature by direct contact therewith and to shield said freezing space and said freezing tubes from warm circulating air by causing cooled air to envelop'said freezing space and freezing tubes, a freezing compartment arranged withln said freezing space to receive a removable ice tray, a cooling compartment enclosing said cooling space, and means connecting said multiple tubes to a refrigerant supply inlet and a vapor refrigerant outlet.

26. An air cooling and water freezing evaporator, comprising a liquid refrigerant supply header, multiple tubes connected to ward from said freezing tubes in a cooling.

space tocool circulating air therein to a arran cooling temperature above freezing'temperature by direct contact therewith.

27. An" air cooling and water freezing 'ward from said freezing tubes in a cooling space to cool circulating air therein to a cooling temperature above freezingtemperature bydirect contact therewith, a freezing compartment arranged within said freezing space to receive a removable ice tray, and a cooling compartment enclosing said cooling space.

28. An aircooling and. water freezing" evaporator, comprising a liquid refrigerant supplyl header, multiple tubes connected to sm eader to recelve liquid refrigerant therefrom independent of each other and arranged to provide multi le freezing tubes upon th lateral sides a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said-freezing tubes in a cooling space to cool circulating air thereinto a coo temperature above freezing temperature y direct contact therewith, a freezing compartment arranged within said freezing space to receive a removable ice .tray, and a heat conductor having higher thermal conductivity than air to transfer heat from said freezing compartment .to said freezin tubes.

29'. An air cooling and water reezing evaporator, comprising a liquid refrigerant supply header, independent multiple tubes connected to said header tQZQIFGCQiVG liquid refrigerant therefrom inde 'n"dent of each other and arranged to provi ingtubesupon both lateral sides of a freezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing tubes in a cooling space tocool circulating air therein to a cooling temperature above freezing tem rature by direct contact therewith an to s 'eld freezing space and said freezing tubes from-warm circulating air by causing cooled air to envelop said freezing space an said freezing tubes.

30. An air cooling and waterfreezing evaporator, comprising a liquid refrigerant supply header, independent multiple tubes connected to receive hquid refrigerant therefrom independent of each other and arranged to provide multiple freezing tubes upon both lateral sides of a freezing space to create a rature therein and multiple coo tubes arranged outward said freezing tubes-in a cooling space to cool circulating air therein to a-. cooling multiple freezdirect contact therewith and to shield said freezing space and said freezing tubes from warm circulating 'air by causing cooled air to envelop said freezing space and said freezing tubes, a freezing compartment arranged within said freezing space to receive a removable ice tray, and a cooling compartment enclosing said coolin space.

31; An air coo ing and water freezing evaporator, comprising a liquid refrigerant supply header, independent multiple tubes connected to said header to receive liquid refrigerant therefrom independent of each other and-arranged to provide multiple freez-c ing tubes upon both lateral sides of a freezing space to create a freezing temperature therein v and multiple exposed cooling tubes arranged outward from said freezing tubes in a coolin space to cool circulating air therein to a coo ing temperature above freezing temperature by direct contact therewith and to shield said freezing space and said freezing tubes from warm circulating'air by causing v cooled 'air to envelop said freezing space and said freezing tubes, a freezing compartment ductor having in her thermal conductivity than air to transf r heat from said freezing compartment to said freezing tubes.

32. An air cooling and water freezing evaporator, comprising freezing meanshaving multiple freezing tubes arranged upon arranged within said freez 'ingspace to rev leave a removable ice tray, and a heat conboth lateral sides of a reezing space to create a freezing temperature therein and multiple exposed cooling tubes arranged outward from said freezing space to cool air in a coolingspace outside said freezing spaceby direct contact therewith and to shield said freezing space and said freezing means from warm circulating air. a

33. An air cooling and water freezing eva orator, comprislng means to provide mu tiple ducts arranged to provide in part multiple freezing ducts upon both lateral sides of a freezing space to create a freezing temperature therein and in part multiple exposed cooling ducts having direct contact.

with the circulating air in a'cooling space outside said freezing space and arranged outward from said freezing ducts to shield said freezing space and said freezing ducts fromwarmcirculating air, a freezing compartment arranged within said freezing space to receive a removable ice tray, and a cooling compartment enclosing said cooling space.

34. An air cooling and water freezing evaporator, comprising multiple tubes arranged to provide in part mtflti le freezing tubes uponfboth lateral sides 0 a freezing space to create a freezing temperature therein and in part multiple exposed cooling tubes having direct contact with the circulating air p in a cooling s ace outside said freezing space temperature above freezing tempera e by and arrang outward from said freezing tubes to shield said freezing space and said freezing tubes from warm circulating air, a freezing compartment arranged within said freezing space to receive a removable ice tray, and a coolingcompartment enclosing said cooling space.

35. A mechanical refrigerating evaporator comprising a refrigerant container, a freezing compartment embraced by said refrigerant container and having an open front end,

a front plate having an entrance there-Q through to said compartment, an ice tray arranged within said compartment, a cover plate connected to said ice tray to engage said front plate and closesaid entrance and spaced from the front of said ice tray to provide. a

, passage between said cover plate and said ice tray, and a handle arranged upon the front of said cover plate.

36. A mechanical refrigerating evaporator comprising a refrigerant container, a freezing compartment embraced by said refrigerant container and having an open front end, a removable front plate having an entrance therethrough to said compartment, an ice tray arranged within said compartment, a cover plate connected to said ice tray to engage said front plate and close said entrance and spaced from the front of said ice tray to provide a passage between said cover plate and said ice tray, and a handle arranged upon the front of said cover plate.

37. A mechanical refrigerating evaporator comprisinga refrigerant container, a freezing compartment embraced by said refrigerant container and having an open front end, a removable front plate carried by said evaporator and having an entrance therethrough to said compartment, an ice tray arranged within said compartment, a cover plate connected to said ice tray to engage said front plate and close said entrance and spaced from the front of said ice tray to provide a passage between said cover plate and said ice tray, and a handle arranged upon the front of said cover plate. 1

In witness whereof, I have hereunto subscribed my name.

ALFRED W. M'ELLOWES.

CERTIFICATE OF CoRRECTIoN.

Patent No; 1,833,846.

ALFRED w. MELLOWES.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as 'follows: Page l, line 77, after "refrigerator? insert the numeral 1; page 5, line 12, claim 20,.for the syllable "inb" read ing; page 6, line 50, claim 29, after "shield" insert said, and line 57, claim 30, after "to" insert said header to; and that the said Letters Patent should he read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 2nd day of February, A. D. 1932.

M. J. Moore,

(seal; Acting Commissioner of Patents.

Granted November 24, 19 31, to 

